The Importance of Digging Deep

If he doesn't want to do either of the things I've suggested, why don't you look for other people who are interested in digging and you can make friends with them? There's got to be a digging club. Go on Discord and search like digging club and I guarantee like something would pop up. He needs an oxygen pack for sure. If he doesn't have any training with confined spaces, he needs to stop ASAP. A potential collapse is possible. But if he digs deep and doesn't properly ventilate it, he could run out of oxygen and pass out and die without knowing even what happened. This is a very serious danger that kills people in mills, mines and factories